One vertex per element, one color per generator, with an edge from x to x·s.
(2,4)(6,10)(7,12)(16,24)(20,27)(22,28)(25,26) involution — undirected(5,6)(7,11)(8,12)(9,10)(13,14)(15,19)(16,20)(17,21)(18,23)(22,26)(24,27)(25,28) involution — undirected(1,2,3,4)(5,7,9,12)(6,11,10,8)(13,15)(14,18)(16,22)(17,23)(19,21)(20,25)(24,28)(26,27)(5,8,9,11)(6,12,10,7)(13,15)(14,19)(16,22)(17,23)(18,21)(20,26)(24,28)(25,27)(13,14)(15,18)(16,20)(17,21)(19,23)(22,25)(24,27)(26,28) involution — undirected(13,16)(14,20)(15,22)(17,24)(18,25)(19,26)(21,27)(23,28) involution — undirectedA Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.